Lochwinnoch Primary School has provided a showcase for Cambrian Slate, showing how an early 1900s traditional building can still retain its original appearance using a modern slate substitute, along with traditional slate detailing.

The challenge was to retain the school’s original appearance, complete with complex details such as hips, valleys, skews, the interface between flat roofs and around skylights, without costing as much as slate.

Renfrewshire Council and Redland developed the answer to the challenge: Cambrian Slate, which is precision engineered and manufactured using 60% recycled Welsh slate.

Redland carried out a full SpecMaster roof specification, together with James Grant, examining every aspect of the roof in detail. These included raking valley details, sprocketed eaves, changes of pitch on the roof slope, detailing of top edge and side abutments, flat to pitch lead, ventilation at eaves and ridge, and underlay details.